KR880003206A - Optical fiber dispersion converter - Google Patents

Optical fiber dispersion converter Download PDF

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Publication number
KR880003206A
KR880003206A KR1019870008721A KR870008721A KR880003206A KR 880003206 A KR880003206 A KR 880003206A KR 1019870008721 A KR1019870008721 A KR 1019870008721A KR 870008721 A KR870008721 A KR 870008721A KR 880003206 A KR880003206 A KR 880003206A
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KR
South Korea
Prior art keywords
light
optical fiber
beams
transmission system
multimode
Prior art date
Application number
KR1019870008721A
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Korean (ko)
Inventor
아디세샤이아 바가바툴라 벤카타
Original Assignee
알프레트 엘. 마이클슨
코닝 글라스 웍스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 알프레트 엘. 마이클슨, 코닝 글라스 웍스 filed Critical 알프레트 엘. 마이클슨
Publication of KR880003206A publication Critical patent/KR880003206A/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29371—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion
    • G02B6/29374—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion in an optical light guide
    • G02B6/29376—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion in an optical light guide coupling light guides for controlling wavelength dispersion, e.g. by concatenation of two light guides having different dispersion properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
    • H04B10/25133—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion including a lumped electrical or optical dispersion compensator

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Communication System (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Glass Compositions (AREA)

Abstract

An optical transmission system is described wherein light is transmitted from a transmitter (Tx) to a receiver (Rx) by at least one transmission optical fiber (11). The system includes a dispersion transformer (13) which receives light from one of the components, compensates for or transforms the delay distortion of the various wavelengths transmitted through the system, and provides the next component in the system with a compensated or transformed light beam. The dispersion transformer (13) comprises means for receiving light from one of the components and dispersing/separating the light into a plurality of spatially separated beams which are directed onto the endface of a multimode optical fiber (16). The position of each beam on the endface of the multimode fiber (16) is a function of the velocity with which the light that forms the beam propagates through the transmission optical fiber (11). The multimode fiber (16) is characterized by a refractive index profile and a shape which are such that the modes excited therein are propagated therethrough with appropriate delays to generate an output pulse of desired width. Dispersion can be reduced or increased. Light emanating from the multimode fiber (16) is coupled to the next adjacent component of the system.

Description

광 파이버 분산 변환기Optical fiber dispersion converter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 분산 변환기의 개요도.1 is a schematic diagram of a distributed converter of the present invention.

제3도는 본 발명을 실시하기 위한 시스템의 일례를 도시한 도면.3 shows an example of a system for practicing the present invention.

제5도는 본 발명을 실시하기 위한 시스템의 다른 일례를 도시한 그래프도.5 is a graph showing another example of a system for practicing the present invention.

Claims (10)

광 소오스와 광 검파기, 이들 소오스와 검파기 사이에 접속되는 최소한 하나의 전송 광 파이버, 그리고 전기한 부품들중 임의의 두 부품 사이에 접속되는 분산 변환기가 일렬로 배열되어 있는 광 전송 시스템에 있어서, 상기 분산 변환기가 다중모드 광 파이버와 전기한 부품들중 어느 한 부품으로부터 빛을 수신하여 그 빛을 복수의 비임으로 공간적으로 분산시키기 위한 수단과를 구비하는데, 상기 각 비임의 위치는 상기 비임들을 형성하는 빛이 상기 최소한 하나의 전송 광 파이버를 통해 전파하는 속도의 함수이고, 상기 빛을 수신하는 수단은 또한 상기 비임들을 상기 다중모드 파이버의 입력 단부면상의 일부분으로 지향시키며, 상기 다중모드 파이버로부터 방사하는 빛은 상기 시스템의 다음 인접 부품에 결합되도록 한 것을 특징으로 하는 광 전송 시스템.10. An optical transmission system in which an optical source and an optical detector, at least one transmission optical fiber connected between the source and the detector, and a dispersion converter connected between any two of the foregoing components are arranged in a line. Means for receiving a light from any one of the multimode optical fiber and the electrical components and for dispersing the light spatially into a plurality of beams, the location of each beam forming the beams Is a function of the speed at which light propagates through the at least one transmitting optical fiber, and the means for receiving the light also directs the beams to a portion on the input end face of the multimode fiber and radiates from the multimode fiber The light is coupled to the next adjacent component of the system. System. 제1항에 있어서, 상기 다중모드 광 파이버의 굴절지수가 n(r)=no[1-△(r/a)α]의 식에 따라 변화하는 것을 특징으로 하는 광 전송 시스템.The optical transmission system according to claim 1, wherein the refractive index of the multimode optical fiber is changed according to the formula of n (r) = no [1-Δ (r / a) α]. 제2항에 있어서, 상기 다중모드 광 파이버 또는 그것의 코어의 굴절지수가 (a)반경이 커짐에 따라 증가하거나, (b)반경이 커짐에 따라 감소하거나, (c)반경이 커짐에 따라 처음에는 증가하고, 나중에는 감소하는 것을 특징으로 하는 광 전송 시스템.The method of claim 2, wherein the refractive index of the multimode optical fiber or its core increases as (a) the radius increases, (b) decreases as the radius increases, or (c) as the radius increases. Increasing and later decreasing. 제1항에 있어서, 상기 비임들을 지향시키기 위한 수단이 상기 다중모드 광 파이버내에서 오직 자오광선의 전파만을 개시시키기 위한 수단을 구비하는 것을 특징으로 하는 광 전송 시스템.The system of claim 1 wherein the means for directing the beams comprises means for initiating only propagation of meridian rays within the multimode optical fiber. 제4항에 있어서, 상기 개시 수단이 상기 입력 단부면에 인접하는 마스크를 구비하는데, 상기 마스크는 그 마스크 내부에 직경방향으로 연장하는 슬리트를 통해 빛이 상기 단부면에 전달되는 것을 제외하고는 그 나머지 모든 빛의 전달을 차단하도록 하는 것을 특징으로 하는 광 전송 시스템.5. The apparatus of claim 4, wherein the initiation means comprises a mask adjacent the input end face, except that the light is transmitted to the end face through slits extending radially within the mask. The optical transmission system, characterized in that to block the transmission of all the rest of the light. 제5항에 있어서, 상기 슬리트는 (a)상기 단부면의 직경 전체에 걸쳐 연장하거나, (b)상기 단부면의 반경에만 걸쳐 연장하는 것을 특징으로 하는 광 전송 시스템.6. The light transmission system according to claim 5, wherein the slits (a) extend over the entire diameter of the end face, or (b) only over the radius of the end face. 제5항에 있어서, 상기 슬리트가 마스킹 물질의 스트립들에 의해 분리되는 복수의 세그먼트로 이루어지는 것을 특징으로 하는 광 전송 시스템.6. The light transmission system according to claim 5, wherein said slits consist of a plurality of segments separated by strips of masking material. 제1항 내지 제7항중 어느 한 항에 있어서, 상기 비임들을 지향시키기 위한 수단이 상기 공간적으로 분리된 비임들의 상기 입력 단부면에 대한 입사각을 변경시키기 위한 수단을 추가로 구비하는 것을 특징으로 하는 광 전송 시스템.8. Light according to any one of the preceding claims, wherein the means for directing the beams further comprises means for changing the angle of incidence of the spatially separated beams to the input end face. Transmission system. 제1항 내지 제7항중 어느 한 항에 있어서, 상기 비임들을 지향시키기 위한 수단이 상기 공간적으로 분리된 비임들을 방사상으로 변위시키기 위한 수단을 추가로 구비하는 것을 특징으로 하는 광 전송 시스템.8. The light transmission system as claimed in claim 1, wherein the means for directing the beams further comprises means for radially displacing the spatially separated beams. 제1항 내지 제9항중 어느 한 항에 있어서, 상기 다중모드 광 파이버가 단부끼리 접속되어 있는 최소한 2개의 세그먼트로 이루어지고, 상기 최소한 2개의 세그먼트는 서로 다른 굴절지수 프로필을 갖는 것을 특징으로 하는 광 전송 시스템.10. The light as claimed in any one of claims 1 to 9, wherein the multimode optical fiber consists of at least two segments connected end to end, wherein the at least two segments have different refractive index profiles. Transmission system. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019870008721A 1986-08-08 1987-08-08 Optical fiber dispersion converter KR880003206A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/894,579 US4768853A (en) 1986-08-08 1986-08-08 Optical fiber dispersion transformer
US894,579 1986-08-08

Publications (1)

Publication Number Publication Date
KR880003206A true KR880003206A (en) 1988-05-14

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ID=25403271

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Application Number Title Priority Date Filing Date
KR1019870008721A KR880003206A (en) 1986-08-08 1987-08-08 Optical fiber dispersion converter

Country Status (8)

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US (1) US4768853A (en)
EP (1) EP0256810B1 (en)
JP (1) JPS6343110A (en)
KR (1) KR880003206A (en)
AT (1) ATE59750T1 (en)
AU (1) AU586349B2 (en)
CA (1) CA1298502C (en)
DE (1) DE3766913D1 (en)

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Also Published As

Publication number Publication date
DE3766913D1 (en) 1991-02-07
EP0256810A2 (en) 1988-02-24
US4768853A (en) 1988-09-06
ATE59750T1 (en) 1991-01-15
AU586349B2 (en) 1989-07-06
AU7652187A (en) 1988-02-11
EP0256810B1 (en) 1991-01-02
JPS6343110A (en) 1988-02-24
EP0256810A3 (en) 1989-01-25
CA1298502C (en) 1992-04-07

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